Burner grid



June 24,, 194?.

H. E. MILLS BURNER GRID Filed July 5, 1943 2 Sheets-Sheet l INVENTQR EWJZ'ZIE H. E. MELLS BURNER GRID Filed July 5, 1945 2 Sheets-Sheet 2 I INVENTOR, jfl eiuerai 2Z5.

Patented June 24, 1947 BURNER GRID Herbert E. Mills, Detroit, Mich, assignor to The Murray Corporation of America, Detroit, Mich., a corporation of Delaware Application July 5, 1943, Serial No. 493,539

1 Claim. 1

This invention relates to grids for stove burners and particularly to a new and novel grid of spiral construction;

Grids are employed on the tops of stoves above the burner for the purpose of supporting utensils in predetermined relation to the burner and in spaced relation to the stove top. Usually the grids are made of interconnecting webs having radially or parallelly disposed supporting arms upon which the utensils rest.

The present invention contemplates the use of a new type of grid which simulates in appearance the enclosed electric grid used on an electric stove. This permits the cabinet to be built into an electric or a gas type of unit. By the selection of electric grids or gas burners and the present grids, an electric or gas stove will be provided, thereby eliminating the necessity of making two distinct cabinets for the difierent types of stoves.

The present grid embodies the formation of an inverted channel-shaped ring which is stamped or otherwise formed from stainless steel or chrome plate sheet metal to simulate in appearance the ring of the electric burner. The grid portion embodies a casting, stamping or formed rod which spirals inwardly from opposite points on the top web of the annular ring. The ends of the spirals restupon the ring and provide the required clearance between the top of the grid and the top of the stove.

When testing the grid upon a standard burner with a predetermined flame and operating a predetermined length of time, it was found that applicants grid confined the flame within the confines of the annular ring without any cold spots appearing in the confined area. The test was conducted upon sheets of asbestos on one of which the standard form of grid showed cold spots along the engaging portions and an extended heat area far beyond that within which it was confined in applicants grid.

Accordingly, the main objects of this invention are to provide a grid embodying an annular peripheral element and spiral arms extending from the periphery to the center of the grid; to form a grid from an annular element and spiral arms which extend from the annular element to the center of the grid; to form a grid from an annular inverted channel-shaped stamping and a grid formed of arms extending from two or more points from the top web of the annular element to its central area; to provide a grid having spiral arms which confines the heat within the area of the grid while uniformly heating the entire area; and, in general, to provide a grid structure for a stove which is simple in construction, which eliminates hot spots while confining the heat to the area of the grid, and which is economical to manufacture.

Other objects and features of novelty of this invention will be specifically pointed out or will become apparent when referring, for a better un-- derstanding of the invention, to the following description, taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a sectional view of a stove and burner construction having a grid mounted thereon which embodies features of this invention;

Fig. 2 is a plan view of the structure illustrated in Fig. 1;

Fig. 3 is a sectional view of the structure illustrated in Fig. 2, taken on the line 33 thereof;

Fig. 4 is a broken, sectional view of structure similar to that illustrated in Fig. 2, showing a modified form thereof;

Fig. 5 is a sectional view of the structure illustrated in Fig. 4, taken on the line 5-5 thereof; and

Fig. 6 is a View of structure, similar to that illustrated in Fig. 5, showing another form of the invention.

A stove is illustrated having a stove top Ill, provided with a burner openin I l, defined by an upwardly presented channel-shaped edge portion I2. A burner unit I3 is mounted in the stove having an extending tray I4 disposed beneath the opening II in the stove top. The burner is similar in construction to that illustrated and described in the copending application of Henry D. Polie, Serial No. 493,545, filed July 5, 1943, and assigned to the assignee, of the present invention.

The rid 15, which embodies features of this invention, comprises an annular ring l6 which is herein illustrated as being made from a stamping of inverted channel section. The outer peripheral extending downwardly from the web ll of the ring 16 rests within the upwardly presented channel 12 in the stove top. While the ring of this construction may be made of any type of sheet metal, stainless steel or chrome-plated steel is preferred, so that the top web [1 of the ring jecting tongues 22 and 23. These tongues extend within an aperture 24 in the top of the web I! and are formed over the metal at the ends of the aperture for anchoring the arms to the web. It is to be understood that the grid element 18 may be welded or otherwise secured to the annular ring I6.

Referring to Figs. 4 and 5, a further form of grid is illustrated, embodying the annular ring l6 and a wire grid element 26. The grid element 26 is similar to the element 18 with the exception that the former is circular in cross-section, While the latter is rectangular. Round apertures 21 are provided in the web I! of the ring l6 through which the bent ends 28 of the grid element extend and are secured by the heads 29 swaged on the ends.

In Fig. 6 the grid element 3| is hollow, but is otherwise formed in the same manner as the grid element 26. Bent rods 32 have one end welded or otherwise secured within the ends of the element 3|, while the other end extends through apertures 21 in the web I! of the ring H5. The ends are swaged to form the securing heads 29.

While the grids herein illustrated are made of stampings, formed straps or rods, it is to be understood that a unit grid may be made of castings or stampings, or otherwise formed as separate elements and secured together. The spiral grid elements employed to make up the grid eliminate cold spots within the area of the confined heat which is maintained within the area of the supporting ring. Not only is a unique,

easily cleaned and pleasant appearing grid provided by this construction, but the elimination of the cold spots and the confining of the heat is of material importance.

What is claimed is:

A grid embodying an inverted channel-shaped ring having apertures through the top portion, and a grid element embodying arms having portions disposed in said apertures and spiraling from the ring inwardly to the center of the grid, the top surface of said grid being spaced a predetermined distance above said ring.

HERBERT E. MILLS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,005,242 Rogers June 18, 1935 2,162,504 Hadley et a1 June 13, 1939 2,223,961 Mills Dec. 3, 1940 1,716,179 Mack June 4, 1929 1,355,933 Wilcox Oct. 19, 1920 2,261,496 Happe et al. Nov. 4, 1941 1,544,953 Tappana et al. July 7, 1925 FOREIGN PATENTS Number Country Date 382,040 Great Britain Oct. 20, 1932 547,185 France Sept, 14, 1922 809,139 France Dec. 3, 1936 49,897 Denmark Feb. 18, 1935 

